Monday night, September 10th found a gaggle of celebrities packing into the Times Square Hard Rock Cafe to committ their famous face power to promote the event whose proceeds go to the Sustainable Biodiesel Alliance. A huge shout-out to the beautiful and talented ecorazzi photographer Melissa Rosenberg for these exclusive shots!

Host Willie Nelson and wife Annie Nelson both clearly having a great hair daypose on the Green Carpet of the event they co-hosted.

Co-host Daryl Hannah rocks pretty hard for the cause.

Co-host Woody Harrelson looks ready to party in his hat.

Law and Order’s Ramon Rodriguez looks pretty comfortable with an over-sized guitar, no?

Other notable stars at the event included designer Kate Spade, Rosie Perez, Stephen Colbert,Natasha Bedingfirld, the group OAR , and Oscar Winner/Dancing with the Stars Alum Tatum O’Neal.